DEXATEK DK9169 Demo Kit User Guide

DK9169 Demo Kit
User Guide

DK9169 Demo Kit Getting Started Guide
NOTE ­ all data and credential information you provide will be stored in Dexatek’s account, and accessible to Dexter. If you have any questions or concerns, please reach out to our support team at awspartner@dexatek.com/ +886 2 8698 4245 #828

Document Information

The DK-9169 Demo kit is based on the RTL8711AM SoC and designed for IoT System Extended Revision History (Version, Date, Description of change) V5.0 2022/05/011

Overview

Ameba RTL8711AM is a highly integrated single-chip with low power consumption for IoT (Internet of Things). It combines an Arm® new architecture Arm®v8M KM3 MCU, Wi-Fi and provides a bunch of configurable GPIOs which are configured as digital peripherals for different applications and control usage.
RTL8711AM SoC also integrates internal 2.5MB RAM memory to minimize IoT end product size and reduce your development cost.
Features:

1. Complete IoT solution (low-level development, cloud services, APP)
2. Support AT + application set secondary development
3. Support OTA wireless upgrade
4. Support Bluetooth smart networking,

Application IoT.

• Home automation
• Sensor networks
• Building automation
• Industrial
• Retail
• Interactive entertainment devices
• Remote control
• Gaming controller

Hardware Description

3.1 Data Sheet
https://www.dexatek.com/_files/ugd/c97cac_817c1987ed1b49bea26071756f2888f7.pdf

DK-9169 Demo Kit Spec

SoC| RTL8711AM
WLAN| WiFi 802.11 b/g/n 2.4
Antenna| Chip Antenna
USB| USB2.0 1
RAM| 2.5MB internal RAM on SoC & 4MB external flash on Dev. Board
Indicator| Function1(Green) System Power(Blue)
Button| Function Button 1
CART| UART 2
GPIO| GPIO IN3 + OUT3
12C| 12C*1
Power| 3.3V / 5V
EVB SIZE| 75.69mm 44.83mm

3.2 Standard Kit Contents
DK9169 Demo Kit (D9169 Module + Demo board)
3.3 User-provided items
Micro USB Type A power adapter 5V 1A

Setup your AWS account and Permissions

Users do NOT need to set up an AWS account, user will be using Dexatek’s cloud infrastructure. After the user purchases Dexatek’s device, the user only needs to download the APP and sign up via the APP. All the required permissions will be granted to the user, due to the integration between AWS Cognito User Pool and Identity Pool. If the User wants/needs to set up their own environment, the user will need to send an email to Dexatek (awspartner@dexatek.com), and Dexatek’s engineer will contact and support them.

Create Resources in AWS IoT

Resources are created when pairing, these are the steps
a. User presses the reset button for 3 seconds on the device, the device becomes “pairing mode”
b. User turns on the “Bluetooth” of their phone,
c. User opens our APP and follows the pairing wizard
d. Once APP receives all the information it needs, then APP sends the payload to a Lambda API called “AddDevice”, developed by Dexatek, by making this HTTP POST call(“device”), Lambda API returns an OTP(One-Time Password). Noted: Most of the IoT Resources are created in this step, “AddDevice” API helps to create “IoT Things”, “IoT Device Shadow”, “Map to the correct thing type” and “create IoT Policy”, and users don’t need to create manually. The device Certificate has not yet been generated and Device has no IoT Core permission or connectivity up to this point.
e. APP sends the OTP to the Device via Bluetooth
f. The device makes an HTTP POST call to Lambda API, API named “GenerateCerts” and developed by Dexatek, OTP will be included in the payload, then Lambda API returns an AWS IoT Certificate. IoT certificate is generated in this step, “GenerateCerts” API help to create IoT Certificate, and bind the IoT Certificate to the IoT Policy. Users don’t need to worry about the relationship between IoT Policy and Iot Certificate.
g. The device will save the AWS IoT Certificate in the Flash, and use this credential to interact with AWS IoT Core. Note: The device should have IoT connectivity by now By doing Step a ~ g, all the required resources will be created by the Lambda API, which is developed by Dexter

Provision of the Device with Credentials

Please reference points 5d to 5g.

Setup your hardware

1. Connect your IoT device (e.g. sensor….)
2. Plug in the USB Power
3. Turn on the power switch

Build the demo

7.1 Download the latest version of the “User Guide for installation of the Demo App at the product web page as below link. Follow the steps in the User Guide to download and install the app on the phone. https://www.dexatek.com /aws-lot-core-dk9169

Run the demo

Go to the demo APP main page and select the interface your device is connected to

1. Select the “I2C” Tab to read /write I2C data
2. Select the “GPIO” Tab to monitor whether GPIO is High/Low status
3. Select the “UART” Tab to read/write UART RX & TX data

Troubleshooting

1. Check the power indicator to make sure the power supply is properly connected.
2. Use minimum 1A current power supply to ensure sufficient power
3. Follow point 8 to the connected device.
4. Power off and check your device connect to the connector as well.

NOTE ­ all data and credential information you provide will be stored in Dexatek’s account, and accessible to Dexter. If you have any questions or concerns, please reach out to our support team at awspartner@dexatek.com/ +886 2 8698 4245 #828

References

• AWS loT Core-DK9169 | 2020-dexatek

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